| 摘要 |
<p>PURPOSE:To recover not only a solvent having a high b.p. and easy to decompose but also a solvent diffused into air in low concn. with high quality and high efficiency by combining a concentrator extremely enhanced in the concn. magnification of solvent-containing gas and a low temp. condensing recovery device recovering a solvent by condensation or freezing. CONSTITUTION:Gas to be treated is passed through the treatment zone 1a of a rotor 1 composed of an activated carbon honeycomb molded body to make the solvent in said gas adsorbed. The solvent adsorbed on the rotor 1 is desorbed by the regeneration gas flowing through a circulating route 12 and the obtained solvent concn. gas is sent to condensing towers 2, 3. The freezing of the solvent conc. gas due to cooling and the thawing of frozen matter due to thawing gas are alternately repeated in the coolers of the condensing towers 2, 3. By this constitution, the solvent is once frozen from the solvent conc. gas and subsequently thawn to be recovered as a liquid.</p> |
